Heating apparatus



{No Model.)

J. KOHLER.

HEATING APPARATUS.

Patented Aug. 9, 1887.

k PETERS, PholnLhhognwlr, mumm. ma

UNITED STATES PATENT OFFICE.

TOSEPH KOHLER, OF BOSTON, MASSACHUSETTS.

HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 368,153, dated August9, 1887.

Application filed November 30, 1886. Serial No. 220,270. (No model.) i

To all whom it may concern:

Be it known that I, JosErrr KonLER, of Boston, in the county of Suffolkand State of Massachusetts, haveinvented certain new and usefulImprovements in Heating Apparatus, of which the following is a full,clear, and exact description.

This invention, relating to water and air heating furnaces andapparatuses, consists in certain constructions and arrangements of theparts composing such apparatuses, all as hereinafter fully described,and set forth in the claims.

In the drawings forming part of this specification, Figure l is acentral vertical section, and Fig. 2 is a horizontal section, line 22,Fig.1.

In the drawings, A is the fire-pot.

.2 is the conibustion-chamber, inelosed with in a wroughtiron jacket orshell, B.

C is the fire-grate.

D is the ash-pit.

E is the feed-door to fire-pot A.

F is the door to ash-pit D.

G is the clinkerdoor.

His a dust-fine making communication with the ash-pit D and passage atfecd-door E.

K is the pipe-connection between chimneyflue and combustion-chamber offurnace.

L is a shell or casing surrounding the furnace above described, andmaking an inelosed hotair chamber or space, M, around all sides and thetop of the furnace, and having a coldair box or flue, M leading into it,all, except as to the features of this invention, the same as ordinary,and therefore needing no more particular description herein.

The fire-pot A at its central portion is surrounded by a cast-ironhollow or chambered ring, N, connected by a pipe, 0, to a suitablewater-supply, (not shown,) and on its upper side provided with acircular vertical flange, P, preferably in one piece therewith, and towhich is secured the bottom edge of the cylindrical hopper-(gincontinuation of the fire pot, and through which communication is madewith the fire-pot at the feed-door E. This cylindrical hopper iscontinued into the shell or jacket B making the combustionchamber, andwhich is closed around its sides and top, except where connection ismade through the latter by pipe K with the chimney-flue. (Not shown.)

S S are a series of separate vertical watertubes in a circular rowaround the combustionchainbcrB, and connected and in communication attheir lower ends with the water-ring N on its upper side. These verticalwater-tubes are preferably dispensed with opposite the fced-door E.Again, the vertical water-tubes S at their upper ends are connected toand in communication with the lower end of an annular and verticalwater-tank, which is the outer tank of a series of water-tanks, T, inthe present instance consisting of two annular and vertical tanks, onewithin the other, and a central and vertical tank within the innerannular and vertical tank, and severally concentric with each other.

T are annular'and vertical spaces between the tanks T, of the form andarrangement above described, and open at both ends to the chamberinelosed by the shell or jacket B".

T" are horizontal water-pipes joining the series of water-tanks T atboth the upper and lower ends thereof to each other, and thereby makingfree communication between the sev eral tanks for the circulation fromone to the other of their contents in the working of the apparatus, ashereinafter explained.

Y is an open space or portion of the combustion-chamber around the sidesof the outer annular water-tank of the series of watertanks T and acrossthe top of all of the tanks and between said outer tank and the jacket Bmaking the combustionchamber.

Z Z are open spaces between the vertical tubes S, connecting the outerwater-tank with the water-ring N, and also back of the same, and all sothat the products of combustion can freely circulate around them.

The water-ring N, vertical tubes S, and series of water-tanks T arecharged with water through the pipe 0 from a suitable water-supply tothe proper level, and in the operation of the furnace thcso-containedwater is heated and generated into steam to be used for heat ingpurposes, leading it as generated from the steam-space of the inner andcircular watertank of the series of water-tanks T either directly orindirectly to and through the heat ing or other apparatus wherein it isto be utilized for heating or other purposes.

The series of water-tanks T, vertical tubes S, and horizontal water-ringN about fire-pot,

in the combination and arrangement all as described, obviously secure amost effective and active heating of their contained water and ageneration thereof into steam; and again, as the furnace for thesteam-generating parts above described is surrounded by an air-chamber,M, subject to the heat arising from the products of combustion of thefurnace, and which is radiated through the walls of the firepot and theshell of the combustion-chamber, obviously heated air is also obtainedto be used for heating or other purposes, as may be desired, and whichis to be conducted therefor through suitable pipes to the placesdesired.

The water-tanks T are to be provided with test-cocks, such as at A, fortesting the height of their contained water and otherwise, all as wellknown and forming no part of this invention.

V, Fig. 1, is a steam reservoir or cylinder connected by a steam-passagewith the central water-tank of the series of water-tanks T at its upperend, for receiving and holding the steam generated in the tanks.

As is plain, the invention as particularly described, combines in oneapparatus means for securing hot air and steam from the combustion ofthe same fuel.

Having thus described my invention, whatI claim, and desire to secure byLetters Patent,

1. In a furnace of otherwise suitable construction, a water-ring, N,having a water-connection and surrounding the fire-pot, in con1-bination with vertical water-tubes S at their lower ends, connected tosaid water-ring N and having open spaces Z between them, verticalannular and concentric water-tanks T, having vertical annular openspaces T between them, horizontal pipes T, joining them at their upperand lower ends, and one having said vertical water-tubes S connected toit, and one a steam-outlet, and all and severally arranged within the combustion-chamber of the furnace and for the circulation of the productsof combustion around them, substantially as described, for the purposespecified.

2. In a furnace of otherwise suitable construction, aninclosed chamber,M, entirely surrounding it and having a cold-air flue, M a water-ring,N, having a water-connection and surrounding the fire-pot A, incombination with vertical watertubes S at their lower ends,

connected to said water ring N and having open spaces Z between them,vertical annular and concentric water-tanks T, having vertical annularopen spaces T 'between them, horizontal pipes T joining them at theirupper and lower ends, and one having said vertical water-tubes Sconnected to it, and one a steamoutlet, and all and severally arrangedwithin the combustion-chamber of the furnace and for the circulation ofthe products of combustion around them, substantially as described, forthe purposes specified.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JOSEPH KOHLER.

Witnesses:

ALBERT W. BROWN, KATE E. Barrows.

